The key elements could include the characters. There must be some interesting characters in it that drive the story. Maybe there is a hero or heroine with a unique personality.
The setting of the drama is a key element too. If it's set in a specific cultural or historical context, it will influence the characters' behaviors and the overall story. For instance, if it's in a traditional society, there might be certain rules and norms that the characters have to abide by, which in turn creates various situations and conflicts in the story.
The plot twists are also important. For example, something unexpected might happen in the middle of the story that changes the direction of the whole drama. It could be a sudden revelation about a character's past or a new event that throws all the characters into chaos.